Summary
The present theory treats ultrasonic cavitation as a train of expansion and contraction of a bubble, while most theories (e. g.Rayleigh's andGüth's) treated only contraction step.
As a measure for the cavitation effect on sonochemical reaction, we used the reaction rateB mole l−1 sec−1. Especially in the case of ultrasonic depolymerisation of linear polymers we can use the final valueg of the degree of polymerisation besides initial rateB of depolymerisation.
The theory can explain many experimental results of sonochemistry, e. g., effects of ultrasonic intensity and frequency, static pressure, size of bubble, gas in bubble, the kind of solvent, concentration of solution and temperature. The fact that the mono-disperse solution is easily obtained by ultrasonic depolymerisation can be explained, too.
The use of two characteritic constantsB andg contributes also to the research on mechanism of cavitation, e. g., the existence of a prephenomenon, the significance of imperfect cavitation and the diagraming of conditions for cavitation.
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Okuyama, M., Hirose, T. Physico-chemical approach to ultrasonic cavitation dynamics on ultrasonic cavitation from the viewpoint of sonochemical reactions. Kolloid-Z.u.Z.Polymere 226, 70–83 (1968). https://doi.org/10.1007/BF02086034
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DOI: https://doi.org/10.1007/BF02086034